<template>
    <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card>
            <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
                <el-col :span="7">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button @click="getUserList" slot="append" icon="el-icon-search"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
                </el-col>
            </el-row>
        </el-card>
        <!-- 用户列表(表格)区域 -->
        <el-table :data="userList" border stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>
            <el-table-column label="邮箱" prop="email"></el-table-column>
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态">
                <template slot-scope="scope">
                    <el-switch @change="stateChange(scope.row)" v-model="scope.row.mg_state"></el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作" width="180px">
                <template slot-scope="scope">
                    <!-- 修改 -->
                    <el-button @click="showEditDialog(scope.row.id)" type="primary" icon="el-icon-edit" size='mini'></el-button>
                    <!-- 删除 -->
                    <el-button @click="removeUserById(scope.row.id)" type="danger" icon="el-icon-delete" size='mini'></el-button>
                    <!-- 分配角色 -->
                    <el-tooltip class="item" effect="dark" content="分配角色" placement="top" :enterable="false">
                        <el-button @click="setRole(scope.row)" type="warning" icon="el-icon-setting" size='mini'></el-button>
                    </el-tooltip>
                </template>
            </el-table-column>
        </el-table>
        <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
        </el-pagination>
        <!-- 对话框组件  :visible.sync(设置是否显示对话框) width(设置对话框的宽度)
:before-close(在对话框关闭前触发的事件) -->
        <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
            <!-- 对话框主体区域 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="电话" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 对话框底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
            <!-- 对话框主体区域 -->
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="电话" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 对话框底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色对话框 -->
        <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
            <div>
                <p>当前的用户:{{userInfo.username}}</p>
                <p>当前的角色:{{userInfo.role_name}}</p>
                <p>分配新角色:
                    <el-select v-model="selectedRoleId" placeholder="请选择角色">
                        <!-- :label 显示文本，:value 选中值 -->
                        <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>


    </div>
</template>

<script>
    export default {

        props: [],

        components: {},

        data() {
            //验证邮箱的规则
            var checkEmail = (rule, value, cb) => {
                const regEmail = /^\w+@\w+(\.\w+)+$/;
                if (regEmail.test(value)) {
                    return cb()
                }
                //返回一个错误提示
                cb(new Error('请输入合法的邮箱'))
            };
            //验证手机号码的规则
            var checkMobile = (rule, value, cb) => {
                const regMobile = /^1[34578]\d{9}$/;
                if (regMobile.test(value)) {
                    return cb()
                }
                //返回一个错误提示
                cb(new Error('请输入合法的手机号码'))
            };
            return {
                //获取查询用户信息的参数
                queryInfo: {
                    query: '',
                    pagenum: 1,
                    pagesize: 2
                },
                addForm: {
                    username: "",
                    password: "",
                    email: "",
                    mobile: ""
                },
                editForm: {
                    username:"",
                    email:"",
                    mobile:""
                },
                //保存请求回来的用户列表数据
                userList: [],
                total: 0,
                addDialogVisible: false,
                editDialogVisible: false,
                setRoleDialogVisible: false,
                // 添加表单的验证规则对象
                addFormRules: {
                    username: [
                        { required: true, message: '请输入用户名称', trigger: 'blur' },
                        {
                            min: 3,
                            max: 10,
                            message: '用户名在3~10个字符之间',
                            trigger: 'blur'
                        }
                    ],
                    password: [
                        { required: true, message: '请输入密码', trigger: 'blur' },
                        {
                            min: 6,
                            max: 15,
                            message: '用户名在6~15个字符之间',
                            trigger: 'blur'
                        }
                    ],
                    email: [
                        { required: true, message: '请输入邮箱', trigger: 'blur' },
                        { validator:checkEmail, message: '邮箱格式不正确，请重新输入', trigger: 'blur'}
                    ],
                    mobile: [
                        { required: true, message: '请输入手机号码', trigger: 'blur' },
                        { validator:checkMobile, message: '手机号码不正确，请重新输入', trigger: 'blur'}
                    ]
                },
                editFormRules: {
                    email: [
                        { required: true, message: '请输入邮箱', trigger: 'blur' },
                        {
                            validator: checkEmail,
                            message: '邮箱格式不正确，请重新输入',
                            trigger: 'blur'
                        }
                    ],
                    mobile: [
                        { required: true, message: '请输入手机号码', trigger: 'blur' },
                        {
                            validator: checkMobile,
                            message: '手机号码不正确，请重新输入',
                            trigger: 'blur'
                        }
                    ]
                },
                userInfo: {
                    username: "",
                    role_name: "",
                },
                selectedRoleId: "",
                rolesList: []
            }
        },

        watch: {},

        created() {
            this.getUserList();
        },

        mounted() {

        },

        methods: {
            async getUserList(){
                //发送请求获取用户列表数据
                const {data: res} = await this.$http.get('users', {
                    params: this.queryInfo
                });
                //如果返回状态为异常状态则报错并返回
                if (res.meta.status !== 200) return this.$message.error('获取用户列表失败');
                //如果返回状态正常，将请求的数据保存在data中
                this.userList = res.data.users;
                this.total = res.data.total;
            },
            handleSizeChange(newSize){
                this.queryInfo.pagesize = newSize;
                //重新按照pagesize发送请求，请求最新的数据
                this.getUserList();
            },
            handleCurrentChange(current){
                this.queryInfo.pagenum = current;
                //重新按照pagenum发送请求，请求最新的数据
                this.getUserList();
            },
            async stateChange(row){
//                console.log("scope================>",scope)

                //发送请求进行状态修改
                const {data: res} = await this.$http.put(
                    `users/${row.id}/state/${row.mg_state}`
                );
                //如果返回状态为异常状态则报错并返回
                if (res.meta.status !== 200) {
                    row.mg_state = !row.mg_state;
                    return this.$message.error('修改状态失败')
                }
                this.$message.success('更新状态成功')
            },
            addDialogClosed(){
                //对话框关闭之后，重置表达
                this.$refs.addFormRef.resetFields();
            },
            editDialogClosed(){
                //对话框关闭之后，重置表达
                this.$refs.editFormRef.resetFields();
            },
            addUser(){
                //点击确定按钮，添加新用户
                //调用validate进行表单验证
                this.$refs.addFormRef.validate( async valid => {
                    if(!valid) return this.$message.error("请填写完整用户信息");
                    //发送请求完成添加用户的操作
                    const {data:res} = await this.$http.post("users",this.addForm)
                    //判断如果添加失败，就做提示
                    if (res.meta.status !== 201)
                        return this.$message.error('添加用户失败')
                    //添加成功的提示
                    this.$message.success("添加用户成功")
                    //重新请求最新的数据
                    this.getUserList()
                    //关闭对话框
                    this.addDialogVisible = false
                })
            },
            //展示编辑用户的对话框
            async showEditDialog(id) {
                //发送请求根据id获取用户信息
                const { data: res } = await this.$http.get('users/' + id)
                //判断如果添加失败，就做提示
                if (res.meta.status !== 200) return this.$message.error('获取用户信息失败')
                //将获取到的数据保存到数据editForm中
                this.editForm = res.data
                //显示弹出窗
                this.editDialogVisible = true
            },

            async editUser(id) {
                //用户点击修改表单中的确定按钮之后，验证表单数据
                this.$refs.editFormRef.validate(async valid => {
                    if (!valid) return this.$message.error('请填写完整用户信息')
                    //发送请求完成修改用户的操作
                    const { data: res } = await this.$http.put(
                        'users/' + this.editForm.id,
                        this.editForm
                    )
                    //判断如果修改失败，就做提示
                    if (res.meta.status !== 200) return this.$message.error('修改用户失败')
                    //修改成功的提示
                    this.$message.success('修改用户成功')
                    //关闭对话框
                    this.editDialogVisible = false
                    //重新请求最新的数据
                    this.getUserList()
                })
            },
            async removeUserById(id){
                //弹出确定取消框，是否删除用户
                const confirmResult = await this.$confirm('请问是否要永久删除该用户','删除提示',{
                    confirmButtonText:'确认删除',
                    cancelButtonText:'取消',
                    type:'warning'
                }).catch(err=>err)
                //如果用户点击确认，则confirmResult 为'confirm'
                //如果用户点击取消, 则confirmResult获取的就是catch的错误消息'cancel'
                if(confirmResult != "confirm"){
                    return this.$message.info("已经取消删除")
                }
                //发送请求根据id完成删除操作
                const {data:res} = await this.$http.delete('users/'+id)
                //判断如果删除失败，就做提示
                if (res.meta.status !== 200) return this.$message.error('删除用户失败')
                //修改成功的提示
                this.$message.success('删除用户成功')
                //重新请求最新的数据
                this.getUserList()
            },
            async setRole( userInfo ){
                //保存起来以供后续使用
                this.userInfo = userInfo;
                //获取所有的角色信息，以备下拉列表使用
                const { data: res } = await this.$http.get('roles');
                //判断如果删除失败，就做提示
                if (res.meta.status !== 200) return this.$message.error('获取角色权限列表失败');

                this.rolesList = res.data;
                //展示分配角色对话框
                this.setRoleDialogVisible = true;


            },
            async saveRoleInfo(){
                //当用户点击确定按钮之后
                //判断用户是否选择了需要分配的角色
                if(!this.selectedRoleId){
                    return this.$message.error('请选择需要分配的角色')
                }
                //发送请求完成分配角色的操作
                const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId})

                //判断如果删除失败，就做提示
                if (res.meta.status !== 200)
                    return this.$message.error('分配角色失败')

                this.$message.success('分配角色成功')
                this.getUserList();
                //关闭对话框
                this.setRoleDialogVisible = false
            },
            setRoleDialogClosed(){
                //当关闭对话框的时候，重置下拉框中的内容
                this.selectedRoleId = ''
                this.userInfo = {}
            }
        },

        computed: {}
    };
</script>

<style lang="scss" type="text/scss" scoped>
    .el-card {
        margin-top: 20px;
    }
</style>
